Saw



C. I. WELCH Sept. 19, 1939.

SEW

Filed Sept. :5, 19;?

Patented Sept. 19, 1939 UNITED STATES PATENT OFFICE 1 Claim.

This invention relates to improvements in saw handles.

The general object of the invention is to provide an improved saw handlehaving meansthereon whereby the back of the saw may be used as astraightedge for marking various angles on pitches.

Another object of the invention is to provide an improved saw handlehaving thereon a pivoted angle plate and coacting pitch scales wherebywhen the angle plate is set to various indicia on the scale the back ofthe saw may be used to mark off plumb cuts on common rafters, hip andvalley rafters, and plumb and check marks on jack and valley rafters.

Other objects and the advantages of this invention will be apparent fromthe following description taken in connection with the accompanyingdrawing, wherein:

Fig. l is a fragmentary side elevation of a saw having my improvedhandle construction thereon;

Fig. 2 is a top plan view of the device shown in Fig. 1;

Fig. 3 is a section taken on line 3-3 Fig. 1; and

Fig. 4 is a section taken on line 44 Fig. 1.

Referring to the drawing by reference characters I have indicated myimproved saw handle generally at Iii. As shown the handle Ill includes abody portion I2 and a grip portion I3 which are of conventional design.

The body portion I2 has a slot I4 therein to receive a saw blade I5which is secured to the handle It by the usual countersunk bolts I6. Thefront face of the body I2 is divided into two surfaces, one surface I'Ibeing formed at 90 to the back or edge I8 of the blade I5 and the othersurface I9 being formed at 45 to the blade back I8. Similarly the bottomsurface 20 may be formed at an angle to the blade back I8 and in thedrawing it is shown as at an angle of 15 to the blade back.

Mounted on one side of the body I2 I provide a metal plate 2I which isshown as secured to the body I2 by a plurality of screws 22. The

plate 2i is shaped to conform to the angle faces II, I9 and 20 of thebody l2.

Mounted on the plate 2I I provide a quadrant or angle plate 23 which ispivotally secured to the plate 2I as at 24 adjacent the intersection :5of the angle faces I! and I9. The quadrant plate 23 includes an inwardlyextending flange 25 which in one extreme position of the quadrant plate23 is in a position at 90 to the blade back I8 (as shown in Fig. l) andin the other extreme position engages the 45 face I9 of the body I2.

The quadrant plate 23 has an elongated arcuate" slot '26 therein whichis coaxial with the pivot 24. Mounted on the plate H I provide a bolt2'! which may be immovably secured to the plate 2| 'as by welding,brazing or otherwise securing it thereto. The bolt 2'! is positioned inthe .elongated aperture 21 of the plate 23 and has a clamping nut 28positioned thereon.

On the plate 2| and coaxial with the edge 29 I provide an outer indiciatable 30 and an inner 1G indicia table 3|. The outer indicia table 31]is divided into a plurality-of degrees to indicate the pitches of plumbcuts for common and jack rafters from naught to twelve pitch and theinner table M is similarly divided to indicate the 15 pitches of plumbcuts for hip and valley rafters.

The portion 32 of the upper edge of the quadrant plate 23 is used as agauge to be set at the various pitch indicia of the tables 30 and 3i toset the flange 25 at the desired degree to the 20 blade back I8.

In operation when the operator desires to mark a line on a plank atright angles to one edge thereof he places the 90 face ll against theedge of the plank and draws a line along the blade 25 back I8. When theoperator desires to mark a line at 45 to one edge he places the 45 faceI9 of the body on the side opposite the plate 2| against the edge of theplank and draws a line along the blade back I8. Or he may swing the 30quadrant plate 23 to its innermost position and place the flange 25thereof against the edge of the plank. If the operator desires to mark a15 or line on a plank he places the 15 face 20 against the edge of theplank and draws a line 35 along the blade back I8.

When the operator desires to mark a plumb cut pitch on a common rafterhe swings the quadrant to a position wherein the edge 32 thereof is inline with the desired pitch mark on the 40 table 30, he then tightensthe nut 28 to firmly clamp the quadrant plate 23 in the adjustedposition. Thereafter the operator places the quadrant flange 25 againstthe side of the rafter and draws a line along the blade back I8.

When the operator desires to mark a plumb cut pitch on a hip or valleyrafter he, swings the quadrant to a position wherein the edge 32 thereofis in line with the desired pitch mark on the table 3|, he then tightensthe nut 28 to firmly 5 clamp the quadrant plate 23 in the adjustedposition, thereafter the operator places the quadrant flange 25 againstthe side of the rafter and draws a line along the blade back I8.

The plate 2| adjacent to the open edge thereof 55 is provided with ascale 33 shown as divided into twelfths of an inch and which may be usedfor general scaling purposes.

The outer face of the plate is provided with a data table 34. This tableincludes a number of columns. Column A designates the roof pitch or risein inches per foot of run. Columns B and C indicate the diagonal lengthsin inches and twelfths of an inch, respectively, for common and jackrafters while Columns D and E give the length in inches and twelfths ofan inch, respectively, of hip and valley rafters. The table may be usedfor determining the rafter lengths and may also be used in figuringbrace lengths and may be used for such other purposes as foundationlayouts, etc. 1

From the foregoing description it will be apparent that I have provideda novel saw handle including angle finding means thereon and other,

data which is simple in construction and highly eflicient in use.

I claim:

In a device of the class described, a blade having a straight edgethereon, a supporting body secured to and extending above the blade,said body having a first straight edge thereon arranged at right anglesto the said straight edge of the blade, said body having a secondstraight. edge thereon intersecting the first body straight edge andinclined to the first body straight edge, said body having a thirdstraight edge thereon inclined at an angle to the second body straightedge, a plate member secured to said body, said plate member havingstraight edges aligned with the said first, second and third bodystraight edges, a quadrant member mounted on said plate member to pivotover the plate member about an axis disposed adjacent to theintersection of the first and second body straight edges, said quadrantmember having a flange thereon directed towards said blade and adaptedin one position to engage the second body straight edge to limit themovement of the member, said flange in another position being inalignment with the first mentioned body straight edge, said plate memberhaving a data table thereon, said table including common and hip andvalley rafter lengths for various pitches, said quadrant memberincluding a portion alignable with said data table and means to holdsaid quadrant member in adjusted position.

CLYDE I. WELCH.

